Omega OM-SGD-28-M-420 Owner's manual
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- Measuring, testing & control
- Type
- Owner's manual
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OM-SGD-28-M-420
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User’s Guide
Current Loop Indicator Smart Graphics Display
Specications liable to change without prior warning Data Sheet - Issue 1 SL
www.omega.com
FEATURES
• 2.8” color TFT screen
• Use PanelPilot software, to setup and customize the display
• Compatible with Windows XP, 2000, Vista and Windows 7
• Over 40 meter templates to choose from
• New templates automatically download in PanelPilot software
• Programmable via the USB interface
• Simple panel mounting solution
• Wide operating voltage of 4V – 30V d.c.
• Measures current from 4-20mA.
• Digital hold
ORDERING INFORMATION
Standard Display
(Panel meter, xing kit,
quick start guide)
OM-SGD-28-M-420
The OM-SGD-28-M-420 is a smart graphics display with a 320 x 240 pixel (QVGA) color
display and USB programming interface.
Using the PanelPilot software (available for Windows XP, Vista and Windows 7), users are able to choose from an ever-increasing number
of congurations (six voltmeters at launch) which can then be customised to their needs.
Colors, text labels, splash screen and input scaling can all be customised by the user through the software and then uploaded to the
OM-SGD-28-M-420 through the USB connection.
Panel or enclosure installation of the display is simple, using a panel xing clip to mount the display, and 4 screw terminals to connect
the inputs.
Note: Requires fully oating PSU with respect to current loop
OM-SGD-28-M-420
Current Loop Indicator
Smart Graphics Display
0 (+32)
4
35
0
0
Accuracy
Linearity
Sample rate
Operating temperature range
Supply voltage
Supply current **
Measurement range
Loop volt drop
0.05
3
4-20
0.4-2.0
0.1
±1*
+40 (+104)
30
190
50
5.0
%
Count
Samples / second
°C (°F)
V d.c.
mA
mA
V
Minimum UnitTypical Maximum
SPECIFICATIONS
* Depending on user calibration settings
** Voltage dependent. See graph on Page 2.
USB Cable
(Type A to mini-B)
OM-CABLE-USB-A-MF
Specications liable to change without prior warning Data Sheet - Issue 1 SL
www.omega.com
OM-SGD-28-M-420
Current Loop Indicator Smart Graphics Display
HARDWARE
Screw Terminal Functions
1 NC Do not connect
2 I+ Positive connection from current loop
3 I- Negative connection to current loop, and 0V power supply return
4 V+ Positive power supply connection (4V – 30V d.c.)
Panel Mounting
The OM-SGD-28-M-420 can be tted into panels 1mm - 3mm deep.
A silicone seal is included to improve tting on thin panels. The minimum panel thickness
is increased to 2mm if the seal is not tted. Panel cut-out is 87mm x 54.5mm.
NOTE: The display is NOT protected against moisture or dust.
0
100
200
4 17
30
Current (mA)
Voltage (V)
Typical Supply Current
Display
The display is a 2.8” TFT panel, with a resolution of 320 x 240 pixels and a 16-bit color depth. Any graphics that are uploaded to the meter
are automatically converted to this specication. A resistive touchscreen is tted, for use with supporting applications. Clean the screen with a
damp, soft, lint free cloth.
USB connection
A ‘Type A to Mini-B’ USB cable is required to program and customise the OM-SGD-28-M-420. It typically takes 10 seconds to send a congu-
ration, with an additional 5 seconds needed for the hardware to reset.
The OM-SGD-28-M-420 can be powered directly from USB and is compatible with both USB 1.1 and USB 2.0. The screw terminals and ad-
vanced connector can remain connected whilst using USB, but it is not necessary for V+ to be powered.
A USB power supply is available - OM-EL-WIFI-ADAPTOR-UK (UK plug format) or OM-EL-WIFI-ADAPTOR (USA plug format). This may be used as
a convenient means to provide a fully oating power supply for the loop indicator.
Specications liable to change without prior warning Data Sheet - Issue 1 SL
www.omega.com
DIMENSIONS
All dimensions in mm (inches)
OM-SGD-28-M-420
Current Loop Indicator Smart Graphics Display
PANELPILOT SOFTWARE
Omega’s PanelPilot software is available for download free of charge from www.omega.com. Easy to install and use, the control software
runs under Windows XP (Home and Professional Editions), Vista and Windows 7. The software is used to setup the appearance and
operation of the meter and then upload these settings to the meter.
Multiple types of meter are supplied with the software. Additional types will be made available to download - see www.PanelPilot.com for
details of available meters.
N.B. Do not select any dual channel meters - as these are incompatible with current loop monitoring.
The software allows the following parameters to be congured:
• Meter type
• Text labels (including units and graph labels)
• Background, graph segment and text colors
• Decimal points (entered during scaling)
• Splashscreen image selection (to display a user image, such as a logo, when the meter is powered up)
• Input scaling / calibration (at two points) - xed for 4-20mA applications
57.6 2.3
43.2 1.7
89.1 3.5
56.8 2.2
89.5 3.5
53.8 2.1
84.1 3.3
7.9 0.3
7.0 0.3
14.0 0.635.1 1.4
19.0 0.7
7.7 0.3
9.8 0.4
3.9 0.2
15.2 0.6
23.4 0.9
6.7 0.3
15.0 0.6
17.8 0.7
1.9 0.1
5.7 0.2
DIMENSIONS:
All dimmensions in mm (inches)
WIRE SIZE: 16-26AWG
Viewing Area
Specications liable to change without prior warning Data Sheet - Issue 1 SL
www.omega.com
VARIOUS OPERATING MODES
MEASURING 4-20mA
MEASURING 4-20mA
USING A USB POWER SUPPLY
Power supply to meter must be fully oating
(isolated from the 4-20mA current loop)
Each OM-SGD must be powered from a seper-
ate, fully oating, power supply
USING TWO OM-SGD DISPLAYS IN SAME INSTALLATION
DIGITAL HOLD
DIGI1 will hold the display
ALARM OUTPUT
Applications that feature an alarm can be connected as above.
ALM1 must not sink more than 10mA maximum each. If supply
voltage varies, use an appropriate voltage regulator.
V+
(100R)
0V
I+
4 - 20mA 4 - 20mA
I-
IN1
4 - 20mA
4 - 30V
0V
4 - 30V
0V
V+
0V
IN1
I+
I-
PSU 1
4 - 30V
0V
V+
0V
IN1
I+
I-
PSU 2
V Loop
V+
+5
0V
USB
(100R)
0V
I+
4 - 20mA
I-
IN1
V Loop
V+
(100R)
0V
I+
4 - 20mA 4 - 20mA
I-
IN1
4 - 20mA
4 - 30V
0V
4 - 30V
0V
V+
0V
IN1
I+
I-
PSU 1
4 - 30V
0V
V+
0V
IN1
I+
I-
PSU 2
V Loop
V+
+5
0V
USB
(100R)
0V
I+
4 - 20mA
I-
IN1
V Loop
4 - 30V
0V
I+
I-
4 - 30V
R
R = (V
S
- V
L
)
I
L
V
S
= Supply voltage
V
L
= LED Voltage drop
I
L
= LED current
DIGI1
IN1
I+
I-
ALM1
IN1
4 - 30V
0V
I+
I-
4 - 30V
R
R = (V
S
- V
L
)
I
L
V
S
= Supply voltage
V
L
= LED Voltage drop
I
L
= LED current
DIGI1
IN1
I+
I-
ALM1
IN1
4 - 30V
0V
I+
I-
4 - 30V
R
R = (VS - VL)
I
L
V
S
= Supply voltage
V
L
= LED Voltage drop
I
L
= LED current
DIGI1
IN1
I+
I-
ALM1
IN1
OM-SGD-28-M-420
Current Loop Indicator Smart Graphics Display
Specications liable to change without prior warning Data Sheet - Issue 1 SL
www.omega.com
CURRENT LOOP
ADVANCED CONNECTOR
Internally the OM-SGD-28-M-420 uses a Programmable Gain Amplier (PGA) to make the best use of available resolution (theoretically there
are eight different ranges available to the SGD. However for the 4-20mA application, this is effectively restricted to the 0-2.5 range.
The input voltage range is decided using the two voltages that the user enters in the
scaling section of the Panel Pilot software. The software uses the smallest range
available, which can accommodate both of the voltages entered by the user.
Note: I+ and I- share a common ground (i.e. not oating or isolated from each other).
OM-SGD-28-M-420
Current Loop Indicator Smart Graphics Display
Voltage Range (V)
0 - 1.25
0 - 2.5
0 - 4
0 - 5
0 - 8
0 - 10
0 - 20
0 - 40
Resolution (mV)
4.9
2.4
2.0
1.2
1.0
0.3
9.8
0.6
(4-20mA)
The DIL IDC socket provides an alternative connection method to the screw-
teminals (V+, 0V, IN1 and IN2 are duplicated). It also includes provision for
future expansion using data buses (SPI and I2C) and alarm ouputs. Some
expansion options may require an additional interface board - Visit www.
omega.com for information on which features are currently supported.
DAC1
DIGI5
DIGI3
DIGI1
ALM1
0V
IN1
0V
DIGI6
DIGI4
DIGI2
ALM2
V+
IN2
14 13
1
2
OMEGA’s policy is to make running changes, not model changes, whenever an improvement is possible. This affords
our customers the latest in technology and engineering.
OMEGA is a registered trademark of OMEGA ENGINEERING, INC.
© Copyright 2014 OMEGA ENGINEERING, INC. All rights reserved. This document may not be copied, photocopied,
reproduced, translated, or reduced to any electronic medium or machine-readable form, in whole or in part, without the
prior written consent of OMEGA ENGINEERING, INC.
FOR WARRANTY RETURNS, please have the
following information available BEFORE
contacting OMEGA:
1. Purchase Order number under which the product
was PURCHASED,
2. Model and serial number of the product under
warranty, and
3. Repair instructions and/or specific problems
relative to the product.
FOR NON-WARRANTY REPAIRS,
consult OMEGA
for current repair charges. Have the following
information available BEFORE contacting OMEGA:
1. Purchase Order number to cover the COST
of the repair,
2. Model and serial number of the product, and
3. Repair instructions and/or specific problems
relative to the product.
RETURN REQUESTS/INQUIRIES
Direct all warranty and repair requests/inquiries to the OMEGA Customer Service Department.
BEFORE RETURNING ANY PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAIN AN AUTHORIZED
RETURN (AR) NUMBER FROM OMEGA’S CUSTOMER SERVICE DEPARTMENT (IN ORDER TO AVOID
PROCESSING DELAYS). The assigned AR number should then be marked on the outside of the return
package and on any correspondence.
The purchaser is responsible for shipping charges, freight, insurance and proper packaging to prevent
breakage in transit.
WARRANTY/DISCLAIMER
OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a
period of 13 months from date of purchase. OMEGA’s WARRANTY adds an additional one (1) month
grace period to the normal one (1) year product warranty to cover handling and shipping time. This
ensures that OMEGA’s customers receive maximum coverage on each product.
If the unit malfunctions, it must be returned to the factory for evaluation. OMEGA’s Customer Service
Department will issue an Authorized Return (AR) number immediately upon phone or written request.
Upon examination by OMEGA, if the unit is found to be defective, it will be repaired or replaced at no
charge. OMEGA’s WARRANTY does not apply to defects resulting from any action of the purchas-
er, including but not limited to mishandling, improper interfacing, operation outside of design limits,
improper repair, or unauthorized modification. This WARRANTY is VOID if the unit shows evidence of
having been tampered with or shows evidence of having been damaged as a result of excessive corrosion;
or current, heat, moisture or vibration; improper specification; misapplication; misuse or other operating
conditions outside of OMEGA’s control. Components in which wear is not warranted, include but are not
limited to contact points, fuses, and triacs.
OMEGA is pleased to offer suggestions on the use of its various products. However,
OMEGA neither assumes responsibility for any omissions or errors nor assumes liability for
any damages that result from the use of its products in accordance with information provided
by OMEGA, either verbal or written. OMEGA warrants only that the parts manufactured by the
company will be as specified and free of defects. OMEGA MAKES NO OTHER WARRANTIES OR
REPRESENTATIONS OF ANY KIND WHATSOEVER, EXPRESSED OR IMPLIED, EXCEPT THAT OF
TITLE, AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. LIMITATION OF
LIABILITY: The remedies of purchaser set forth herein are exclusive, and the total liability of
OMEGA with respect to this order, whether based on contract, warranty, negligence,
indemnification, strict liability or otherwise, shall not exceed the purchase price of the
component upon which liability is based. In no event shall OMEGA be liable for
consequential, incidental or special damages.
CONDITIONS: Equipment sold by OMEGA is not intended to be used, nor shall it be used: (1) as a “Basic
Component” under 10 CFR 21 (NRC), used in or with any nuclear installation or activity; or (2) in medical
applications or used on humans. Should any Product(s) be used in or with any nuclear installation or
activity, medical application, used on humans, or misused in any way, OMEGA assumes no responsibility
as set forth in our basic WARRANTY/DISCLAIMER language, and, additionally, purchaser will indemnify
OMEGA and hold OMEGA harmless from any liability or damage whatsoever arising out of the use of the
Product(s) in such a manner.
M5531/0116
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Omega OM-SGD-28-M-420 Owner's manual
- Category
- Measuring, testing & control
- Type
- Owner's manual
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